Rotary motor.



PATENTED FEB. 4, 1908.

H. VAN BERESTEYN.

ROTARY MOTOR.

APPLICATION FILED SBPT.13, 1906.

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PATENTED FEB. 4, 1908.

ILMWWW H. VAN BERESTEYN. ROTARY MOTOR.

APPLICATION FILED SEPTJS, 1906.

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HUGO VAN BERESTEYN, OF BRUSSELS, BELGI UM.

scram! moron.

Specification of Letters Patent.

Patented Feb. 4, 1908.

Application filed September 13. 1906- Serial No. 334.487.

To all whom it may concern:

Be it known that LHUGO VAN BERESTEYN, a subject of the Queen of the Netherlands, and resident of Brussels, Belgium, have invented a certain new andfuseful Improved Rotary Motor, of which the following is a specification. I i

This invention relates to a rotary motor in which the wearing away of the movable parts can be compensated easily and as desired, the

actuating fluid being entirely prevented from leaking, and in which the admission and ex-' pansion of this fluid are controlled by the regulator, the action of which can be regulated during the working.

- One form of the invention isillustrated in the accompanying drawing: Figure 1 being alongitudinal vertical section along a plane passing through the main shaft; Fig. 2 a section through A'A in Fig. 1; Fig. 3 is a plan of the regulator and a sectional view of the distributing and regulating cones; Fig. 4 a section of a plateacting as a slide valve for distribution of the motor fluid and reversing the-motor; Fig. 5 is an inverted plan thereof; Fig. 6 the distribution valve face arranged on the upper semi-cylinder of the motor; and Figs. 7 to 1 1 are details.

The'motor comprises a casing composed of two parts, a lower semi-cylinder 1 cast in one piece with a frame base 2, and anupper semicylinder 3, with an extension 4, in which is a recess intended to receive a plate 38 employed in the distribution of the motor 'fluid, and the supply thereof, as will be explained farther on. These two cylinders are joined together by bolts 79 and the casing has two covers 78. In this casing two frames 6 are arranged which are cut out so as to have a perfectly circular periphery, that comes against the inside of the cylinder 13 and an internal circular wall that is eccentric to the latter and on which the end of the vane 7 of arotary cylinder 8 of cylindrical form, mounted on the main shaft 9 slides. Each of the frames mentioned above thus forms a working chamber in which the piston 8 acts The against the lower working chamber through the passage 67, arranged'towards thebac surface of the vane 0f the pistonj Between two adjacent frames and against each of two extreme frames, a fixed plate 11 is arranged. Each of these plates engages in a circular groove formed in the inner wall of the cylinder or simply flush therewith. The plates and the frames are joined one with the other by means of longitudinal bolts 12 running through holes drilled in those parts.

. In the example illustrated, the frames and consequently the rotary pistons are six in number, themotor shown by wayof example being' a triple-expansion motor, on each side ofthe transverse plane passing through the middle of its longitudinal axis. It is evident that the number for the piston may be varied.

The pistons of the part of the apparatus situated to the right of thesaid transverse plane are mounted at a certain angle, 180

for example, from those of the part to the left of the said plane,.relatively to the position (If the vanes. This arrangement gets rid of the dead print which would exist if all the pistons were keyed in the same manner.

From each of these working chambers a passage 51 runs which serves for carrying off the water (.f condensation.

The main shaft 9 has two fly-wheels 76. It is supported by two plumber-blocks 13, each of which is cast with one'of the covers 7 8 of the cylinder 13.

Each block has an opening having two walls in. the form of cylindrical parts (Fig. 9) one above, the other below, and two fiat vertical side walls. Into, this opening a socket 68 is introduced, of similar external form but of a height 3 mm. less than that of the opening in the block, so as to afford that amount of vertical play to the socket in the said opening. This socket is connected with the blocks by means of bolts 80, the holes for the passage of which in the feet '81 of this socket are made oval, so as to enable the socket to slide when it ascends. In this socket the bearing 14 is loosely arranged. Rings 82 prevent any horizontal displacement of the bearings.

In the bottom of the plumber block a screw hole is drilled into which a bolt 15 is screwed, with a counternut and which comes art of the sliding socket 68. By turning t 's screw in either direction, the socket and consequently the main,

shaft is lowered or raised, enabling the wearing away of the pistons and of the frames to becompensated. r

.It is obvious that, in order to enable this vertical displacement of the main shaft to be effected, the'openings for the passageof this shaft in the covers and the plates separating the working chambers are made oval the vertical direction; y

On to the extension 4 of. the semi-cylinder 3 a cover 16 is pinned, on which, likewise by 1 means of bolts a valve casing 17 is fixed those on the left.

which is employed for admitting the fluid 'under pressure. This cover and this casing are drilled with two passa cs 18, one for the admission of the said fiui into the working.

chambers situated to the right of the cylinder, and the other for the admission thereof to the two working chambers onthe left.

In the casing 17 two truncated pieces 19 and 20 can rotate under slight friction one within the other.

ing cone is connected with the rotary shaft of the regulator, that is actuated by the main shaft, through the medium of; two chain wheels 24 and 25 and a chain 26.

The speed of this piece is one-half that ofthe main shaft. Being drilled with two holes or passages at a'right angle,='it admits 5 the fluid twice for each revolution. These passages are of such a diameter as to afford a degree of admission termed, full pressure at the moment of starting. l

The conical piece 20', that constitutes a regulating cone, is controlled by the movable sleeve-27 ofthe governor when the balls 77 come away from the shaft through the'action of the'centrifugal force. For this urpose the regulating cone may be'rotated ,y aset of levers, in such a manner that it partly or wholly opens the passages of the distributing cone, for the purpose of obtaining an admission proportional to the requirements .of the motor, at any moment.

The set oflevers mentioned above comprises two arms 28 (Figs. 3 and 10) each'of which is hingedly connected with the movable socket or sleeve 27 of thegovernor and also with a bell crank lever 29 that moves around the pivot 70. This lever 29 is bent and has a slot 30. In this slot '30 one ofthe ends of a two armed lever'7l" engages the lever being fixed by means of a square 'hole,

'to the regulating cone.

' twelve in all for the motor shown.

The former 19 of these 'pieces is drilled diametrically with two pasders (high pressure cylinders.)

on an extension of the same form belonging The arrangement of the two arms 29-is inversely symmetrical. Theeflect of this is that when the movable sleeve 27 is displaced throu h the action of centrifugal force, one of t e ends of the lever-is pushed up (Fig. 10 dotted lines) while the other is drawn down, causing a rotary motion to a certain extent of the regulating c'one, and a modification of. the quantity of steam admitted to the motor.

The extension 4 of the upper semi-cylinder of the motor is provided with slide valve face 31 shown in Fig. 6 forming the bottom of the cavity made in this extension.- In this slide valve face ports for distributing the motive fluid are drilled; Two of these openings are provided for each working chamber, that is,

The openings 32 and 33 correspond to the first two working chambers, that on the left as well as that on the right, that is to say the high pressure chambers; the openings 34 and 35 to the expansion chambers, that is to say the intermediate pressure chambers; and the openings 36 and 37 to the third, that is to say to the low pressure chambers. 'On this slide valve face two plates 38- slide (Figs. 1, 4 and 5) which are drilled towards their inner edge and from oneside to the other with a passage 39 or 40 for the admission of the fluid under pressure to the first two cylinfaces ofthese plates channels 41 are formed (Figs. 4 and 5) arrangedfor conveyinginto the intermediate pressure chambers the motive fluid that has acted in thehigh pressure chambers, and channels 42 for conveying to the low pressure chambers the fluid that was expanded in these intermediate ressure chambers. These plates are also dri ed with holes 43, 44 which allow the-motive fluid to escape from the thirdseries of working chambers, to the open air or into a condenser, and these discharge openings may be connected with a single exhaust pipe.

The plates mentioned above can. slide against 'a partition 47 that-forms part with the semi-cylinder 3. 1 To these plates rods 45 '(Fig. '2) are laterally connected which can be operated by a hand lever 46. Accordingly as the plates occupy the back or the front part of the seating in which they can move,-

' the motor rotates in the one or the other direction. In fact, if the holes 32 (Fig. 6) coincide with the holes 39 and 40 of the dis- In the lower tributing slide valve (back position of the same) the motor goes forwards; if, on the contrary, the holes 39 and 40 -are op osite the holes 33 "(position of the slide va vs at the front) the motor moves backwards.

During the passage of the vanes over the dead point that is to say from the point r or the point y (Fig. 2) the passage from one working chamber to the other of the motive fluid under ressure must be interrupted, in order-that t is fluid may .not pass over the front face of the vane instead of expanding over the back or working surface. This obstruction is efiected by means of four cones 48.(Figs. 1, 7 and 11) fixed in pairs on two shafts 49, 50. These cones are arranged on the openings corresponding to 34, 35.

The closingiarrangement is so contrived that the passagesare closed during the time necessary for the passing of .thevanes over I the dead point. For this purpose these cones are cut in the form of. suitable sectors, as shown in Fig. 1.1. I The rotary motion is imparted to these cones by the chain 26, which transmits the motion of the main shaft to the shaft of the regulator. For this purpose the sh aft 49 carries a chain wheel 52 which engages with this chain. The motion is transmitted. from the shaft 49 to the shaft 50 by means of two sprocket wheels 53 and 54, and a small chain 551 The motor also comprises a device by means of which the action of the regulator can be regulated as desired while the motor is 'vcorking. This device is constituted as follows: The tightening ring vof the regulator (Fig. 1) is furnished with two rods 57 which are in contact with a collar 69 and slide in openings formed. in the fixed socket 58. This collar 69 rests against a small cylinder 59 that slides on the shaft of the regulator. This small cylinder has an external screv -thread and receives a screw sleeve 60 furnished with a milled wheel 61. This screw sleeve rests against thef bracket support 62' for the regulator sha t.

If the milled Wheel be turned in either (Iirection the small cylinder 59 is moved in such a manner that the spring 63 of the regulator iscompressed or extended according to circumstances and requirements.

The two holes 18 in the cover 16 can be opened or closed as desired, by slides 64- (see Figs. 1 and 2) which are operated by means of handles 65. This arrangement enables the admission of the motive fluid to one of the two series, right or left of the working chambers, or to both series at once to, be suppressed i Near each corner of the passages 18 a channel 75 is formed in the side ofe'ach frame (see.

Fig. 2) that serves for releasing-the fluid. These passages are intended for carrying off the fluid that remains between the frames the air.

Having now particularly described my said invention, what I claim and desire to secure by Letters Patent is:

1. In a rotary motor the combination with ing chambers, of a plurality of rotary vane pistons working one m'each of the said chambers adapted tooperate under different working pressures and keyed on a common working shaft, and means for operatively admit tingworking fluid to the said working chambers comprising two plates adapted to slide within a chamber in the extension of the cylinder over distributing ports formed in the said extension, there being a plurality of ports for each piston chamber and which )orts are adapted to distribute working iluid to the different piston chambers, each of said plates having a passage adapted to register in different positions with the distributing ports leading to one of the high pressure chambers and said plates having channels in their lower faces adapted to rcgister with others of the said distributing ports to convey the motive fluid that has acted in the high pressure chambers into the intermediate pressure chambers, and being provided with channels adapted to register with still others of the said distributing ports to convey the motive fluid that has acted in the intermediate pressure chambers into the low pressure chambers, and means for allowing the fluid to escape from the low-pressure chambers after acting therein comprising holes formed in the'said slide plates and leading to the exterior.

2. I n a rotary motor the combination with a suitable cylinder having an upper extension and divided into a plurality of working chambers, of a plurality of rotary vane pistons working-one in each of the said chambers adapted to operate .under different working pressures and keyed on a common working shaft, and means for operatively admitting workmg fluld to the said working chamber comprising two plates adapted to liuid to the 'ditl'erent piston chambers, each of said plat-es having a passage adapted to register in d1fierentpos1t1ons with the dis tributing ports leading to one of the high pressure chamber, and said plates having channels in their lower faces adapted to register with others of the said distributing ports to convey the motive fluid that h acted in the high pressure chambers in to the intermediate pressure chambers, and being provided with channels ada ted to register with still others of the said dlstributing ports to convey the motive fluid that has acted in 'the intermediate pressure chambers into the low pressure chambers, and means for allowmg the fluid to escape from the low-pressure chambers after acting therein comprising a suitable cylinder having anupper extenholes formed in the said slide plates and leadsion and div ded into a plurality of 'workl mg to the exterior, and means for closing. 130

said frames, means for holding the said plates and frames together, cylindrical pistons the number of whichcorresponds to that of the said frames and keyed on a common shaft beween the said plates, aradially movable vane in each of the said pistons, means for' pressing the wing a ainst the inner wall of the said cylindrica opening of the said frames, means for compensating the wear and tear of the friction parts, means for operatively admitting pressure fluid tothe piston wings, substant ally as and for the purpose set forth.

4. In a rotarymotor the combination of a cylinder comprislng two half cylinders bolted together, a plurality of framesprovided' with registering eccentric cylindrical openings and snugly fitted into the said cylinder, keys engaging grooves provided in the said frames and corresponding grooves arranged in the said cylinders, plates arranged between and at the ends of the said frames, bolts holding the said frames and plates together, cylindrical pistons keyed on a common shaft and fitting between said plates aradially mov-' able vane arranged in each .of the said pi s-- tons a spring arranged behind each vane, a passage arranged in the piston and adapted I to convey pressure fluid behind the said wing for pressing same a ainst the inner wall of the -said cylindrica openin of the said frames, cylinder heads secure to the ends of the said cylinder, bearings secured to the said cylinder heads and provided each with an opening having cylindrical top and bot' tom walls and flat side walls, a sleeve having approximately the same outlines and adjustably mounted into the said opening, the said sleeve having an inner cup shaped aperture adaptedto receive thebushing, a stop ring adapted 'to prevent axial motion of the bushing, the said plates andcylinder heads being provided where the motor shaft passes with ovalized central holes'adapted to allow radial adjustment of the said shaft, substantially as and for the purpose set forth. 5.. In a rotary motor the combination'with a cylinder, a plurality of working chambers,

two groups of working vane pistons arranged in the said chambers, of a-valve slide face are ranged in the ppper part I. of the cylinder,

two sets of admission and escape orts in the said slide face, two slides adapte to slide on the said face each corresponding to one of the said groups of pistons, admission ports,

or exhaust ports of the said slide face, means for actuating the said slides fromthe outside of the cylinder and means for admitting pressure fluid to the said admission ports and as and for the purpose set forth.

6-. In a rotary motor'the combination with fluid admission passage for each of the said rical passages arranged at 90 one tothe other and adapted each to correspond with one 'of the said admission passages to/allow the ad-j mission of pressure fluid and to cut it, means ing to the speed, substantially as and for the purpose set forth.

7. In a rotary motor the combination with divided into two groups, afresh pressure fluld admlssion passage for each of thesaid diametrical passages arranged at 90 one to the other and each adapted to correspond with one of the. said admission passages, a conical sleeve surrounding the said conical rotary valve and provided with assages adapted. to register with the said a miss on passages, a shaft for the. said rotary valve, means for rotating this shaft athalf the s eed of the motor shaft, acentrifugal regu ator on the said shaft, levers articulated to the movable sleeve -of the, said regulator, inversely arranged'bell crank levers pivotally mounted on the casing" of the said rotary valve and controlling sleeve, one end of each ofthese bell crank levers being articulated to working cylinder, a rotary admission valve, a controlling sleeve'adapted tomodify the 'a'dmissionpassage, a shaft for the said rotar the speed'of the motor shaft, a centrifugal tuating thesaid controlling sleeve, a tightening sleeve57 for this regulator, an-exte'rnally-screw threaded sleeve {69 adapted to slide on the said shaft and-abutting against communication passages and exhaust ports adapted to register either withthe admlsslon cutting off the said admission,substantially for rotating the shaft of the valve athalf the 2 speed of the motor shaft and means for vary-- ing the opening of the said passages accorda cylinder a plurality of working chambers I each of thesaid levers, a square stud axially 8. In a. rotary motor t e combination-pf a a cylinder, a plurality of working chambers divided. into two groups,a fresh pressure.

groups, a rotary valve having two diametgroups, a rotary conical valve having two regulatormounted on .the said shaft and ac-.

ed sleeve 60 screwed on said sleeve 69 and abutting against a fixed part of the motor, and a milled flange 61 on the saidsleeve 69, substantially as and for the purpose set forth.

9. In a rotary motor the combination with aworking cylinder, of a plurality of working chambers divided into two grou s, admission and exhaust passages for each of these chambers, means for admitting fresh pressure liquid into the two middle chambers, passages connecting the exhaust passages of each of these middle chambers to the admission means for rotating this shaft at the same speed as the motor shaft, substantially as and for the purpose set forth.

10. In a rotary motor the combination of-a cylinder, of a plurality of working chambers, of a pressure fluid admission and exhaust passage arranged at a certain distance apart, of grooves 75 arranged between the said admission and exhaust passages in the wall of the chamber, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

HUGO VAN BERESTEYN.

Witnesses:

EVAN PELsEN, GREGORY PHELAN. 

